Highly efficient magnetic iron oxides-polyaniline nanocomposite for electrochemical removal of lead and cadmium ions from contaminated water

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-05-11 DOI:10.1016/j.jtice.2025.106187

Rehab Abd-Elrahman , Hany M. Abd El-Lateef , Nagwa Abo El‐Maali , A.M. Abdel-Mawgoud , Mahmoud Elrouby

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引用次数: 0

Abstract

Background

This study presents the first successful cyclic voltammetry-assisted one-step electrochemical synthesis of polyaniline-iron oxide nanocomposites. The composite films were developed by reducing an iron-triethanolamine complex in an alkaline solution containing aniline monomers, enabling the uniform integration of iron oxide nanoparticles into a conductive polyaniline matrix.

Methods

The nanocomposites were synthesized through electrodeposition, and characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). Thermal stability was evaluated using thermogravimetric (TGA) and differential thermal analysis (DTA).

Significant Findings

The synthesized nanocomposites exhibited excellent capabilities for adsorption or uptake lead and cadmium ions lead and cadmium ions from water, following a chemisorption mechanism as suggested by kinetic and isotherm modeling. The materials demonstrated high reusability with negligible loss in adsorption efficiency over three consecutive adsorption-desorption cycles, and good repeatability with consistent adsorption capacities across multiple batches. Maximum adsorption capacities reached 96.99 mg/g for cadmium and 335.57 mg/g for lead, surpassing many reported materials. This work highlights a scalable electrochemical approach for fabricating high-performance nanocomposite adsorbents for water purification.

Abstract Image

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高效磁性氧化铁-聚苯胺纳米复合材料电化学去除污染水中铅和镉离子

本研究首次成功地在循环伏安辅助下一步电化学合成了聚苯胺-氧化铁纳米复合材料。复合薄膜是通过在含有苯胺单体的碱性溶液中还原铁-三乙醇胺络合物来制备的，从而使氧化铁纳米颗粒均匀地整合到导电聚苯胺基质中。方法采用电沉积法制备纳米复合材料，并采用扫描电镜（SEM）、x射线衍射（XRD）和傅里叶变换红外光谱（FTIR）对其进行表征。热稳定性评价采用热重法（TGA）和差热分析（DTA）。重要发现：合成的纳米复合材料表现出优异的吸附或吸收水中铅和镉离子的能力，其化学吸附机制与动力学和等温线模型一致。该材料具有很高的可重复使用性，在连续三个吸附-解吸循环中吸附效率的损失可以忽略不计，并且具有良好的可重复性，在多个批次中具有一致的吸附能力。镉的最大吸附量为96.99 mg/g，铅的最大吸附量为335.57 mg/g，超过了许多已报道的材料。这项工作强调了一种可扩展的电化学方法，用于制造用于水净化的高性能纳米复合吸附剂。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.